You can verify whether GSS-TSIG has been successfully configured or not using the kinit command. Execute the kinit command with -Vkt option on a managed DHCP Server to verify.
Example:
kinit -Vkt /replicated/etc/krb5.keytab DHCP/dhcp1.bcn.com@BCN.COMNote: The kinit command options
are case-sensitive.
Expected sample output for the successful configuration:
dhcp1:/# kinit-Vkt /replicated/etc/krb5.keytab DHCP/dhcp1.bcn.com@BCN.COM
Authenticated to Kerberos v5